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[par-uh-sit-ik] /ˌpær əˈsɪt ɪk/
of, relating to, or characteristic of parasites.
(of diseases) due to parasites.
Phonetics. excrescent (def 2).
Sometimes, parasitical.
Origin of parasitic
1620-30; < Latin parasīticus < Greek parasītikós. See parasite, -ic
Related forms
parasitically, adverb
parasiticalness, noun
antiparasitic, noun, adjective
antiparasitical, adjective
antiparasitically, adverb
nonparasitic, adjective
nonparasitical, adjective
nonparasitically, adverb
pseudoparasitic, adjective
unparasitic, adjective
unparasitical, adjective
unparasitically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for non-parasitic
Historical Examples
  • A vast number of non-parasitic insects are injurious to man and beast.

    Parasites T. Spencer Cobbold
  • Subsequently they may continue to live a brief period externally in a non-parasitic condition.

  • In this connection it is important to bear in mind that the nearest relatives of the koel are non-parasitic.

    Birds of the Plains Douglas Dewar
  • This is equivalent to calling them non-parasitic parasites, an expression which looks very like a contradiction of terms.

    Parasites T. Spencer Cobbold
  • The Australian specialists agreed that the malady was non-parasitic, and that, therefore, it must be nervous.

  • The non-parasitic cuckoos build nests, lay eggs and sit on them, as every self-respecting bird should do.

    Jungle Folk Douglas Dewar
  • They are non-parasitic, but some of them by their presence in the body may cause such diseases as dysentery, etc.

    Insects and Diseases Rennie W. Doane
  • The non-parasitic Eucopepoda are in many ways much nearer to the trilobites than any other Crustacea.

  • The non-parasitic Copepoda have limbs exceedingly like those of trilobites.

  • This large family falls into two classes—the parasitic and the non-parasitic—both classes being represented in India.

    Indian Birds Douglas Dewar
Word Origin and History for non-parasitic



1620s, from Latin parasiticus, from Greek parasitikos "of or pertaining to a parasite; the trade of a parasite," from parasitos (see parasite). Biological sense is from 1731. Related: Parasitical, 1570s in reference to toadies; from 1640s in the biological sense.

Online Etymology Dictionary, © 2010 Douglas Harper
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non-parasitic in Medicine

parasitic par·a·sit·ic (pār'ə-sĭt'ĭk) or par·a·sit·i·cal (-ĭ-kəl)

  1. Of, relating to, or characteristic of a parasite.

  2. Caused by a parasite.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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